﻿// ******************************************************************
// Copyright � 2015-2018 nventive inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// ******************************************************************
using Microsoft.CodeAnalysis;
using System;
using System.Collections.Immutable;
using System.IO;

namespace Uno.SourceGeneration.Host
{
	class CachingMetadataReferenceResolver : MetadataReferenceResolver
	{
		private readonly Func<string, MetadataReferenceProperties, PortableExecutableReference> _assemblyReferenceProvider;

		public CachingMetadataReferenceResolver(Func<string, MetadataReferenceProperties, PortableExecutableReference> assemblyReferenceProvider)
		{
			_assemblyReferenceProvider = assemblyReferenceProvider;
		}

		public override bool ResolveMissingAssemblies => true;

		public override bool Equals(object other) => throw new NotImplementedException();

		public override int GetHashCode() => throw new NotImplementedException();

		public override ImmutableArray<PortableExecutableReference> ResolveReference(string reference, string baseFilePath, MetadataReferenceProperties properties)
		{
			var metadataReference = _assemblyReferenceProvider(Path.Combine(baseFilePath, reference), properties);
			return ImmutableArray.Create(metadataReference);
		}
	}
}
